[net.unix-wizards] t_iproc & t_oproc - history?

tcs@usna.ARPA (08/12/85)

My 2.9bsd system has a t_iproc as well as t_oproc for routines to start
for input and output.  My 4.2/3 system doesn't have t_iproc.  What
happened to it?  What is its history?  Thanks,
	-tcs
	Terry Slattery	  U.S. Naval Academy	301-267-4413
	ARPA: tcs@brl-bmd     UUCP: decvax!brl-bmd!usna!tcs